There are 114 counties and one independent city in the U.S. State of

Missouri Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas t ...

. Following the

Louisiana Purchase The Louisiana Purchase (french: Vente de la Louisiane, translation=Sale of Louisiana) was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803. In return for fifteen million dollars, or ap ...

and the admittance of

Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is bord ...

into the United States in 1812, five counties were formed out of the Missouri Territory at the first general assembly: Cape Girardeau, New Madrid, Saint Charles, Saint Louis, and Ste. Genevieve. Most subsequent counties were apportioned from these five original counties. Six more counties were added through the 1836

Platte Purchase The Platte Purchase was a land acquisition in 1836 by the United States government from American Indian tribes of the region. It comprised lands along the east bank of the Missouri River and added to the northwest corner of the state of Miss ...

, the acquired lands of which formed the northwest tip of the state and consisted of

Andrew Andrew is the English form of a given name common in many countries. In the 1990s, it was among the top ten most popular names given to boys in English-speaking countries. "Andrew" is frequently shortened to "Andy" or "Drew". The word is derive ...

, Atchison,

Buchanan Buchanan may refer to: People * Buchanan (surname) Places Africa * Buchanan, Liberia, a large coastal town Antarctica * Buchanan Point, Laurie Island Australia * Buchanan, New South Wales * Buchanan, Northern Territory, a locality * Bucha ...

Holt Holt or holte may refer to: Natural world *Holt (den), an otter den * Holt, an area of woodland Places Australia * Holt, Australian Capital Territory * Division of Holt, an electoral district in the Australian House of Representatives in Vic ...

, Nodaway, and Platte counties. In Missouri, the county level of government comes between those of the city and the state. Its primary responsibilities include maintaining roads, providing security, prosecuting criminals, and collecting taxes. Elected officials at this level include a

sheriff A sheriff is a government official, with varying duties, existing in some countries with historical ties to England where the office originated. There is an analogous, although independently developed, office in Iceland that is commonly transla ...

, prosecuting attorney, and

assessor An assessor may be: * ''Assessor'' (fish), a genus of fishes * Assessor (law), the assistant to a judge or magistrate * Assessor (Oxford), a senior officer of the University of Oxford * Assessor (property) Tax assessment, or assessment, is t ...

. Most of the counties in Missouri are named after politicians. One such county, Cass, was originally named Van Buren County after President Martin Van Buren, and was changed to its present name in support of Van Buren's Democratic opponent

Lewis Cass Lewis Cass (October 9, 1782June 17, 1866) was an American military officer, politician, and statesman. He represented Michigan in the United States Senate and served in the Cabinets of two U.S. Presidents, Andrew Jackson and James Buchanan. He w ...

during the presidential election of 1848. Other counties are named after war heroes, natural resources, explorers, and former U.S. territories. The city of St. Louis is an independent city, and is not within the limits of a county. Its residents voted to secede from St. Louis County in 1876. Throughout the United States, St. Louis is one of three independent cities outside the state of

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are ...

(the other two are

Baltimore Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was ...

, Maryland and

Carson City, Nevada Carson City is an independent city and the capital of the U.S. state of Nevada. As of the 2020 census, the population was 58,639, making it the sixth largest city in Nevada. The majority of the city's population lives in Eagle Valley, on th ...

). Population figures are based on the 2021

Census A census is the procedure of systematically acquiring, recording and calculating information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses inc ...

estimate. According to that census estimate, the population of Missouri is 6,168,187, an increase of 0.2% from 2020. The average population of Missouri's counties is 53,636; St. Louis County is the most populous (997,187), and Worth County is the least (1,983). The average land area is . The largest county is Texas County (1,179 sq mi, 3,054 km²) and the smallest is

St. Louis city St. Louis () is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi and the Missouri Rivers. In 2020, the city proper had a population of 301,578, while the bi-state metropolitan area, which e ...

(61.9 sq mi, 160 km²).U.S. Census Bureau
, ("Missouri County Selection Map") The

Federal Information Processing Standard The Federal Information Processing Standards (FIPS) of the United States are a set of publicly announced standards that the National Institute of Standards and Technology (NIST) has developed for use in computer systems of non-military, American ...

(FIPS) is used by the U.S. government to uniquely identify counties, and is provided for each entry. These codes link to the

United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of th ...

's "quick facts" for each county. To distinguish from counties in other states, one must use Missouri's FIPS code, 29. For example, Adair County's unique nationwide identifier is 29001.

Counties

Former county names

References

External links

Missouri Association of Counties

from

University of Missouri The University of Missouri (Mizzou, MU, or Missouri) is a public land-grant research university in Columbia, Missouri. It is Missouri's largest university and the flagship of the four-campus University of Missouri System. MU was founded in ...

Division of Special Collections, Archives, and Rare Books {{featured list

Counties

Counties

Former county names

See also

References

External links